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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
F04C0021000000 Oscillating-piston pumps specially adapted for elastic fluids 1
F04C0023000000 Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (F04C0025000000 takes precedence);; 1
F04C0023020000 Pumps characterised by combination with, or adaptation to, specific driving engines or motors (predominant aspects of the engines or motors, see the relevant classes);; 1
F04C0025000000 Adaptations for special use of pumps for elastic fluids 1
F04C0025020000 for producing high vacuum (sealing arrangements F04C0027000000; silencing F04C0029060000) 1
F04C0027000000 Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids 1
F04C0027020000 Liquid sealing for high-vacuum pumps 1
F04C0028000000 Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids 1
F04C0028020000 specially adapted for several pumps connected in series or in parallel 1
F04C0028040000 specially adapted for reversible pumps 1
F04C0028060000 specially adapted for stopping, starting, idling or no-load operation 1
F04C0028080000 characterised by varying the rotational speed 1
F04C0028100000 characterised by changing the positions of the inlet or outlet openings with respect to the working chamber 1
F04C0028120000 using sliding valves 1
F04C0028140000 using rotating valves 1
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